{"id":"CVE-2026-72148","state":"PUBLISHED","title":"dmaengine: dw-edma: Add spinlock to protect DONE_INT_MASK and ABORT_INT_MASK","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: dw-edma: Add spinlock to protect DONE_INT_MASK and ABORT_INT_MASK\n\nThe DONE_INT_MASK and ABORT_INT_MASK registers are shared by all DMA\nchannels, and modifying them requires a read-modify-write sequence.\nBecause this operation is not atomic, concurrent calls to\ndw_edma_v0_core_start() can introduce race conditions if two channels\nupdate these registers simultaneously.\n\nAdd a spinlock to serialize access to these registers and prevent race\nconditions.\n\n[den: update dw_edma.lock comment]","publishedAt":"2026-08-15T05:53:19.921Z","updatedAt":"2026-08-23T12:46:52.752Z","severity":{"score":8.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:H","source":"Linux"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"7e4b8a4fbe2cecab0959e862604803d063f50029","status":"affected","lessThan":"3989b4775bc2cdbdb4ddc4b1d2420a82b40913f2","versionType":"git"},{"version":"7e4b8a4fbe2cecab0959e862604803d063f50029","status":"affected","lessThan":"f60c7463d44fbc1585d247d0bd6976f7a1099472","versionType":"git"},{"version":"7e4b8a4fbe2cecab0959e862604803d063f50029","status":"affected","lessThan":"2247cc25a91fb1b5b86586ed55fdd5b725a7477c","versionType":"git"},{"version":"7e4b8a4fbe2cecab0959e862604803d063f50029","status":"affected","lessThan":"3ee0f478bb29b4ee892b178179a9a76ddd194149","versionType":"git"},{"version":"7e4b8a4fbe2cecab0959e862604803d063f50029","status":"affected","lessThan":"21a9834f56d6249aaa6ca7c2d8c182d66c48c3e1","versionType":"git"},{"version":"7e4b8a4fbe2cecab0959e862604803d063f50029","status":"affected","lessThan":"ddbc4a8a4fe296f1fa2e59f7d176fc7c773df640","versionType":"git"},{"version":"7e4b8a4fbe2cecab0959e862604803d063f50029","status":"affected","lessThan":"1553ca96e9df158d8f37137cf4bf5fb0dc981d94","versionType":"git"},{"version":"7e4b8a4fbe2cecab0959e862604803d063f50029","status":"affected","lessThan":"8ffba0171c6bbce5f093c6dba5a02c0805b31203","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/dma/dw-edma/dw-edma-core.h","drivers/dma/dw-edma/dw-edma-v0-core.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.3","versionType":"semver"},{"version":"5.10.266","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.217","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.178","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.145","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.97","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.40","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/dma/dw-edma/dw-edma-core.h","drivers/dma/dw-edma/dw-edma-v0-core.c"]}],"references":["https://git.kernel.org/stable/c/3989b4775bc2cdbdb4ddc4b1d2420a82b40913f2","https://git.kernel.org/stable/c/f60c7463d44fbc1585d247d0bd6976f7a1099472","https://git.kernel.org/stable/c/2247cc25a91fb1b5b86586ed55fdd5b725a7477c","https://git.kernel.org/stable/c/3ee0f478bb29b4ee892b178179a9a76ddd194149","https://git.kernel.org/stable/c/21a9834f56d6249aaa6ca7c2d8c182d66c48c3e1","https://git.kernel.org/stable/c/ddbc4a8a4fe296f1fa2e59f7d176fc7c773df640","https://git.kernel.org/stable/c/1553ca96e9df158d8f37137cf4bf5fb0dc981d94","https://git.kernel.org/stable/c/8ffba0171c6bbce5f093c6dba5a02c0805b31203"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/72xxx/CVE-2026-72148.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-72148","state":"PUBLISHED","datePublished":"2026-08-15T05:53:19.921Z","dateUpdated":"2026-08-23T12:46:52.752Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-09T03:40:39.908Z"},"containers":{"cna":{"title":"dmaengine: dw-edma: Add spinlock to protect DONE_INT_MASK and ABORT_INT_MASK","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: dw-edma: Add spinlock to protect DONE_INT_MASK and ABORT_INT_MASK\n\nThe DONE_INT_MASK and ABORT_INT_MASK registers are shared by all DMA\nchannels, and modifying them requires a read-modify-write sequence.\nBecause this operation is not atomic, concurrent calls to\ndw_edma_v0_core_start() can introduce race conditions if two channels\nupdate these registers simultaneously.\n\nAdd a spinlock to serialize access to these registers and prevent race\nconditions.\n\n[den: update dw_edma.lock comment]"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"7e4b8a4fbe2cecab0959e862604803d063f50029","status":"affected","lessThan":"3989b4775bc2cdbdb4ddc4b1d2420a82b40913f2","versionType":"git"},{"version":"7e4b8a4fbe2cecab0959e862604803d063f50029","status":"affected","lessThan":"f60c7463d44fbc1585d247d0bd6976f7a1099472","versionType":"git"},{"version":"7e4b8a4fbe2cecab0959e862604803d063f50029","status":"affected","lessThan":"2247cc25a91fb1b5b86586ed55fdd5b725a7477c","versionType":"git"},{"version":"7e4b8a4fbe2cecab0959e862604803d063f50029","status":"affected","lessThan":"3ee0f478bb29b4ee892b178179a9a76ddd194149","versionType":"git"},{"version":"7e4b8a4fbe2cecab0959e862604803d063f50029","status":"affected","lessThan":"21a9834f56d6249aaa6ca7c2d8c182d66c48c3e1","versionType":"git"},{"version":"7e4b8a4fbe2cecab0959e862604803d063f50029","status":"affected","lessThan":"ddbc4a8a4fe296f1fa2e59f7d176fc7c773df640","versionType":"git"},{"version":"7e4b8a4fbe2cecab0959e862604803d063f50029","status":"affected","lessThan":"1553ca96e9df158d8f37137cf4bf5fb0dc981d94","versionType":"git"},{"version":"7e4b8a4fbe2cecab0959e862604803d063f50029","status":"affected","lessThan":"8ffba0171c6bbce5f093c6dba5a02c0805b31203","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/dma/dw-edma/dw-edma-core.h","drivers/dma/dw-edma/dw-edma-v0-core.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.3","versionType":"semver"},{"version":"5.10.266","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.217","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.178","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.145","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.97","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.40","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/dma/dw-edma/dw-edma-core.h","drivers/dma/dw-edma/dw-edma-v0-core.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/3989b4775bc2cdbdb4ddc4b1d2420a82b40913f2"},{"url":"https://git.kernel.org/stable/c/f60c7463d44fbc1585d247d0bd6976f7a1099472"},{"url":"https://git.kernel.org/stable/c/2247cc25a91fb1b5b86586ed55fdd5b725a7477c"},{"url":"https://git.kernel.org/stable/c/3ee0f478bb29b4ee892b178179a9a76ddd194149"},{"url":"https://git.kernel.org/stable/c/21a9834f56d6249aaa6ca7c2d8c182d66c48c3e1"},{"url":"https://git.kernel.org/stable/c/ddbc4a8a4fe296f1fa2e59f7d176fc7c773df640"},{"url":"https://git.kernel.org/stable/c/1553ca96e9df158d8f37137cf4bf5fb0dc981d94"},{"url":"https://git.kernel.org/stable/c/8ffba0171c6bbce5f093c6dba5a02c0805b31203"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:H","baseScore":8.8,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:A - On PCIe endpoint SoCs (R-Car Gen4, DWC EP) the dw-edma v0 engine is driven when a physically connected PCIe root host initiates endpoint DMA (e.g. pci-epf-mhi); that host peer needs no network path to the victim, fitting Adjacent attack vector.\nAC:L - The race needs only two eDMA channels starting their first chunk concurrently; an attacker controls both sides by issuing parallel DMA requests or timing concurrent completions, with no luck-dependent layout or rare config.\nPR:N - In the highest-impact PCIe EP deployment a malicious or compromised upstream host triggers concurrent endpoint DMA through BAR/MHI traffic without any local Linux credentials, shell, or CAP_* on the vulnerable endpoint system.\nUI:N - Exploitation is fully automated once the attacker can submit concurrent DMA operations; no victim user action such as mounting filesystems or opening files is required.\nS:C - Corrupted shared DONE/ABORT masks and linked-list error enables on an endpoint can disrupt PCIe DMA to/from upstream host memory, impacting resources outside the endpoint kernel security authority across the PCIe boundary.\nC:L - Lost interrupt unmasking can leave host-visible DMA buffers partially updated or stall reads, enabling limited cross-boundary disclosure of in-flight or stale data rather than arbitrary kernel memory read primitives.\nI:L - Register corruption can disable linked-list error detection and desynchronize DMA completion handling, causing limited unintended modification of host or device DMA buffers even though addresses are normally driver-controlled.\nA:H - A lost DONE/ABORT unmask leaves channels permanently BUSY with completions never delivered, wedging dmaengine clients and endpoint services until reboot, constituting a severe availability failure."}]}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-23T12:46:52.752Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"5.10.266"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"5.15.217"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"6.1.178"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"6.6.145"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"6.12.97"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"6.18.40"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"7.1.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}